Pumping apparatus



May 14, 1929. G. C. "ENQS'TRAND lPUMPING APARATUS Filed Feb. l2J 1924Passau M.y*14,'1929.

"f1,11'2.69'4f^ ArENr oFFlcEQ* GUNNAB c.A nuesrnANn', or BRooxLYN, NEWYomr, Assrelfron, BY Insmi Assiem-v mrs, To sALvAGn Pnocnss CORPORATION,or NEW' vom, N. Y., A couron- TION l NEW YORK.

rumeurs ArrABA'rUs.

Apbumonpmea February 1s, 1m. serial no. 692,291.

My invention relates to a pumping apparatus and method for thewithdrawal of fuel oil and residue from the tanks of a vessel. j

This liquid material is viscous, sticky, and in cold vweather almostjelly-like 'and due to its nature it can not be pumped either in a solidcolumn or in an aerated one, but it has to be transmitted in a highvelocity air in stream in a broken up condition.

My invention has for its object to divide the air transmission line intotwo parts of dierent cross sections viz, a vacuum transmission intakeline and a compression transit mission dischar e line, which is of asmaller diameter than tie intake line. l

My invention has also for its object to furnish an air ejector whichdraws the air from the vacuum intake line to afterwards au discharge itas well as the ropelling air into the reduced pressure 'disc arge line.

M invention has for a further object to break up the viscous material atits entrance into the vacuum intake line into suit at able fragments tobe carried away by lthe air stream set up by the ejector.

MyA invention has also for an object to furnish a jet of steam at theentrance of the pressure discharge line to overcome the cooling effectof the expanding compressed air and to boost the discharge.

In the drawing Figure l shows the general pumping arrangement.

Figures 2 and 3 showgthe detail construction of the ejector.l

Figures 4 and 5 show the detail construc l tion of the suction nozzle.

Referring to the drawing in which like aa ing parts, 1 represents thevessel from which the fuel oil is umped.

Alongside tEe vessel a barge 2 is moored and an oil storage tank 3 aswell as `an air compressor 4 are located on the deck of the bar 2.

rlge air compressor 4 is connected to the air ressure line 11 whichfeeds the ejector 6. 'lxe vacuum line 7 andthe discharge line `5 areconnected to the ejector and form together the air transmission linewhich em ties into the stora e tank 3. s 'Phe vacuum line 7 Vas anintake nozzle 8 whichis supplied `with a `reduced neck 9 to into thepressure line 5 throug reference characters designate correspond-iA beinserted into the material to be and a number of small holes The airhose 11 is attached to a side intake 12 of the ejector 6 which intakeleads to the -annular chamber 13 from which the compressed air willdischarge at a great velocity the reduced annular nozzle 14. p

A steam hose 15 ending in a reducing nozzle 16 1s yconnected to someconvenient steam supply.

A vent 17 is located on the storage tank 3 from which tank the pumpedmaterial may be extracted in la convenient manner. During the pumping,the air ejector 6 acting togetherwiththe steam jet 16 creates a vacuumin the Vline 7 which vacuum is suiicient to draw up a restrictedquantity of viscous material -through the restricted neck 9.

This vacuum is also sufficient to draw in the atmospheric air throughthe air holes 10 with a suiiicient velocity to break up the viscousmaterial into fragments which can be carried away rst by the attenuatedair stream in the suction line 7 and afterwards over the ship side inthe compressed air stream in the pressure line 5.

The compressed air furnished by the compressor 4 is the main propellingagent, the main object of the steam which emits from nozzle 16 being toprevent an excessive cool'- ing of the discharged air with accompanyingdecrease of air velocity and viscosity increase of the viscous material.

The dischar e air line is made considerably smaller 51 order to keep upthe necessary air stream velocity required for transmission withoutunduly increasing the air compressor.

The discharged compressed air also serves together with the steam tostill further break up the viscous material.

It is to be noted that the steam is admitted at the end of the pressureline in order not to reduce the existing vacuum in the line 7.

It is also to be noted`that a perfect ventilation of the 'ships tanks iseffected by the ejector as the withdrawn air and vapor must of necessitybe replaced by fresh air.

I do not wish to be understood to limit myself to the pumping of fueloil from Ships an the vacuum air line in- 10 through 'which atmosphericair is admitte 1. Apparatus for transmit-ting viscous material,comprisin a pipe line, means permitting air to mlx w1th and break up theviscous material into fragments as it enters the pipe, means forintroducing a stream lot compressed air into the line in the directionof iow to draw in the material, to discharge it under pressure and tofurther break it up as it comes in contact therewith, and means forheating the material just prior to its contact with the stream ofcompressed a1r.

2. Apparatus for transmitting viscous material, comprising a pipe line,means per mitting air to m1x with and break up the viscous material intofragments as it enters the pipe, and means for introducing a stream ofcompressed air into the line 1n the direction of flow to draw in thematerial, to discharge it under pressure, and to further break it up asit comes in contact therewith, and a steam jet for heating the materialjust prior to its contact with the stream of compressed air and toassist the drawing action of the air stream.

3. Apparatus for transmitting viscous material, comprising a pipe line,an inlet nozzle at one end thereof, air holes around said nozzle, meansintermediate the end of the pipe line to introduce a stream ofcompressed air thereinto in the direction of How of the material towardthe discharge end of the pipe, the pipe from the point of introductionof the compressed air to the discharge end being reduced in diameter,and means for introducing a jet of steam into the pipe line in thedirection of flow of thc material at a point just )rior to theintroduction of the compresse air.

GUNNAR C. ENGSTRAND.

